title: A positive margin is not always an indication for radiotherapy after mastectomy in early breast cancer.
mesh_terms: D000970:Antineoplastic Agents / Q000627:therapeutic use; D001943:Breast Neoplasms / Q000473:pathology / Q000532:radiotherapy* / Q000601:surgery; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008408:Mastectomy; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local; D009367:Neoplasm Staging; D018365:Neoplasm, Residual; D011182:Postoperative Care; D011879:Radiotherapy Dosage; D012008:Recurrence; D015996:Survival Rate
chemical_list: D000970:Antineoplastic Agents